Veneer-log-scoring mechanism



Nov. 13,1928. 1,691,897

H. C. BREIDENBACH VENEER LOG SCORING MECHANISM Filed Nov. 1'7, 1926 2 Sheets-Sheet 1 glwuehtov HENRY QBBBIDENB/HCH Nay. 13, 1928.

H. C. BRElDENBACH VENEER LOG SCORING MECHANISM Filed Nov. '17, 1926 2 SheetsSheet 2 .m w w (HEY C. $513 I.

61cm mu Patented Nov. 13, 1923.

UNIT

, "rare FAB VENEER-LOGr-SCORING MECHANISM.

'App'iicationfi'ied Hove n'ner 17, 1926. Serial No. 148,881.

My invention relates to veneer log scoring mechanisms, and more particularly to mechanisms for dividing the cylindrical or conical surface of wood stock, which is to be planed off into veneer sheets by rotating same in lathe manner, against a shearing blade, and consists substantially in the construction, combination and arrangement of parts hereinafter set forth and pointed out more particularly in the claims.

It is an object of my invention to provide a travelling saw, which may be manually or otherwise fed into the revolvably supported veneer stock, and guided longitudinally thru the adjacent side thereof, whereby veneer planed from same in lathe manner, will fall in economically trimmed sheets, without rough or torn edges.

' It is a primary object of my invention to suspend a mechanism of this class, from an overhead horizontal guide means, by which arrangement the carriage parts of the mechanism are disposed out of the operators way, to give ordinary free access to the veneer machine proper.

It is also an object to support the cut-off saw means by a collapsible suspension, by

which arrangement same may be moved up- I wardly out of the way, when not in use, and fed downwardly again into working position, as desired.

It is also an object to embody with a inechanism of this class, a balancing means, to balance the weight of the saw means and parts sundry thereto, to prevent same from moving down 'ar'dly by force of gravity; and to assist in raising same. I

It is an important object of the invention to provide a cut-off saw for this purpose,

mounted and driven by a motor, preferably an electric motor, and to feed same thru flexible conductors, preferably carried from said motor thru said extension, and thence to a fixed source ofsupply, bywhich arrangement said saw may be readily brought to a variety of working positions, without interruption of the propelling medium.

The above and other objects are attained by the structure illustrated in the accompanying drawings, in which Figure 1 is a front fragmentary view of my invention, and associated mechanisms; Fig. 2 is a partsectional end iew of Fig.1; Fig. 3 is an enlarged sectional view illustrating the preferred means for constructing thesaw carirage and horizontal guide means, and Fig. a is an enlargeddetail elevation, partly in section, of the meeting ends of the collapsible suspension means.

S milar characters of refereiicedesi nate similar parts tliruout the different View;

Referring to Figurel, tlienu-meral 1 desi nates the base of alathe type veneer proddeing machine, in'which the wood stock 2 is revolvably supported between the two center engaging means 3 and i, which in turn are 1, 6si,897 orrica.

pivotally supported on said base thru the pedestal journal means 5, 6 and? The gear wheel 8 is co-axially connected with the cen-" ter means 3, between the journals 5 and 6 by a common shaft 9; the stock 2 being thus rotated by said gear, which in turn is rotated by other gearing (not shown) in conventional.

within said stockin wood plane manneiyby which arrangement it will be understood that revolving the stock in the direction indicated by the arrow 13 will'cause veneersheetsll to be sheared therefrom.

r a V e I l I I ihe circular saw 1:) is disposed in coincidence with thevertical plane, which passes thru the axial center of the stock 2, as will be understood. Said saw .is. concentrically ni unted on a motor 16, preferably of the electric type, which isadapted to drive same.

Said motor is therefore conveniently suspend ed with said saw by means of the upwardly extending hollow motor support rod 17 to which said motor is integrally fixed.

At good clearing-distance above the operator, the flat shaped saw carriage'18 is con veniently supported at its four corners bv the roller means 19, which travel in the tracks 20. Said tracks may be similar to tracks such as are ordinarily used in. supporting garage'or other doors. They are secured tothe ceiling joists'Ql, and being arranged parallel to a medial line of the stock 2'are together sym metrically arranged over same.

From a medial point of said carriage, a sleeve 22 extends downwardly'and receives, in telescoping manner, the motor supporting rod 17. lt will be obvious tliatl vertical adjustment of the motor 16 may bevattained byv corresponding movement of said rod, in said sleeve, by whicharrangement the saw is lowered when cutting into the stock 2, and

likewise withdrawn from cutting positions.

6 It will be also understood that said saw is fed lengthwis'e'with the stock 2 by shifting the-carriage 18 along on the tracks 20,for the purpose of cutting a longitudinal bisecting slit, the depth of whichis'controlled as desired by sliding said rod downwardly in said sleeve a suitable distance, for thus scoring said stock, as understood by those familregion of the rod 17 by the horizontal pivot pin 28, and isadapted. to support said rod by means of the cable strands 29 and 30, which unite about the lower periphery of said pulley and extend upwardly, one from each side of same. The strand 29 runs thru a clearance hole 31 in the carriage 18, tangent to the in ward groove portion of the guide wheel 22,

reaching approximately 90 about same, and thenc.eapproximately horizontal to the stationary attachment32, which is conveniently secured to an overhanging part of the building structure. The strand 30, in like manner extends upwardly thru another clearance hole (not shown) in said carriage, into tangency with the inward groove points of the guide wheel 23, and being threaded approximately 90? about same, extends outwardly therefrom in an approximately horizontal direction, to tangency with the upper points of the grooved wheel 34, thence outwardly around same about 90, and thence downwardly to the counterbalancing weight 35, which it supports. Said weight keeps the cable strands 29 and 30 taut'about the sheave wheel 26,.the guide wheels weight of the saw 15, the motor 16, the rod 17, etc, permitting said saw to be readily raised and lowered, but retaining the imposed positions of same, as will be understood by those familiar with such art.

By this arrangement the carriage 18 may be both shifted back and forth on the tracks ,20, as required for the travel ofthe saw 15,

without disturbing the effectiveness of the weight 35, it being understood that the cable strands 29 and 30 run freely under the sheave wheel 26 and over the guide wheels 22 and 23 although the ends of said cable are held stationary by the attachment 32 and said weight.

The carriagelS is actuated back and forth on the tracks 20 as desired by means of the cables 36 andi 37, which extend therefrom on lines approximately parallel to the axial line "of the-stock"2,'to tangency with the upper 23, etc, and is i just heavy enough to thus counterbalance the portions of the relatively stationary pulley means 38, and thence outwardly around same about 90, and downwardly again to the windlasses 39 and 40, which are pivotally supported to the upright timbers 41, and

adapted to be manually operated by the hand cranks are typically'mounted to said windlasses within convenient reach of the o'pcrator.

The rod 17 is keyed to the sleeve 22 by means of a pin key 44, which is preferably fixed to said sleeve, and is slidably disposed in the corresponding keyway 45 of saidrod 17. This provision prevents said rod from rotating m said sleeve and hence prevents the saw 15 from being inadvertently turned to an'improper cutting angle, and restricts the vertical movements of same.

The motor 16 is fed by the electricalconductors 46 which run from said motor upwardly thru the rod 17 and the Sleeve 22, and thence to the stationary conductor means 47 which are in turn fed from a'source of electricalcurrent supply (notshown). This permits free operation of the invention without regard to the conductors 46 and without interruption of the current supply. v V The conductors 46 are of such length that the saw 15 may be successively lowered as the diameter of thestock 2 is reduced, and as best shown in Fig. '4 of'the drawings,the conductors collapse within the members 17 and 22 when the saw is moved upwardly in a vertical direction so that they may readily pay out as the saw is lowered.

The blade holder 12 is mounted at its ends by the oscillatable supports 48 which are suitably pivoted to the upwardly disposed eyelets 49 of the base 1. The blade 10 is thus swung into the stock 2 to suitably shear o'fl veneer strips of uniform thickness, as will be understood by those familiar with the art, and as said stock is thereby reduced in diameter, the saw 15 is operated from time to time the diameter of said stock is thus reduced, rotation of same is stopped, and a new'eut taken with said saw, longitudinally ofsaid stock by sliding the saw dowmvardly to suitable cutting' height and shifting same along in saw, and any number of scoresirnay be-niade as before mentioned,to precede the veneer cuts, 1n depth. It is understood that when fixed position in any suitable manner, as by means of a binding element 50.

IVhiie I have illustrated in a general way, certain instrumentalitles which may be em ployed in carrying my invention into effect,

it is evident that many modifications may be made in the various details,,without depart ing from the scope of the appended claims, it being understood that my invention is not restricted to particular forms herein described.

I claim as my invention:

In a scoring device for veneer forming material, a circular saw, a motor for supporting and driving said saw, a hollow rod supporting said motor, said rod having a transverse slot through its Walls adjacent its juncture with the motor, a hollow sleeve telescopically receiving said rod, a movable carriage to which said sleeve is attached, a sheave pivotal'ly mounted in said transverse slot the diameter of which is greater than the diameter of said rod, whereby the sheave will project a distance beyond the walls of the rod, a cable passing beneath said sheaveand upwardly to said carriage, one end of said cable being anchored, a counter balance weight attached tothe opposite end of said cable, guide wheels on the'carriage for said cable, and feed wires passing through said hollow sleeve and rod and being collapsible in said sleeve.

In testimony whereof, I have hereunto set my hand on this the th day of October, 1926, A. D.

HENRY G. BREIDENBACH. 

